Home / 1,293.45-1,783.62-1,107.56

Finding the Fourth Proportional to 1,293.45, 1,783.62 and 1,107.56

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Solution

The fourth proportional to 1,293.45, 1,783.62 and 1,107.56 is: 1,527.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.45 : 1,783.62 = 1,107.56 : x
  2. Step 2: Convert to fraction form
    1,293.45/1,783.62 = 1,107.56/x
  3. Step 3: Cross multiply
    1,293.45x = 1,783.62 × 1,107.56
  4. Step 4: Simplify right side
    1,293.45x = 1,975,466.17
  5. Step 5: Solve for x
    x = 1,975,466.17/1,293.45
  6. Step 6: Final answer
    x = 1,527.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.